验证 ImageMagick 安装

Try this:

<?php
//This function prints a text array as an html list.
function alist ($array) {
$alist = "<ul>";
for ($i = 0; $i < sizeof($array); $i++) {
$alist .= "<li>$array[$i]";
}
$alist .= "</ul>";
return $alist;
}
//Try to get ImageMagick "convert" program version number.
exec("convert -version", $out, $rcode);
//Print the return code: 0 if OK, nonzero if error.
echo "Version return code is $rcode <br>";
//Print the output of "convert -version"
echo alist($out);
?>

You can easily check for the Imagick class in PHP.

if( class_exists("Imagick") )
{
//Imagick is installed
}

This is as short and sweet as it can get:

if (!extension_loaded('imagick'))
echo 'imagick not installed';

Try this one-shot solution that should figure out where ImageMagick is, if you have access to it...

This found all versions on my Godaddy hosting.

Upload this file to your server and call it ImageMagick.php or something then run it. You will get all the info you need... hopefully...

Good luck.

<?
/*
// This file will run a test on your server to determine the location and versions of ImageMagick.
//It will look in the most commonly found locations. The last two are where most popular hosts (including "Godaddy") install ImageMagick.
//
// Upload this script to your server and run it for a breakdown of where ImageMagick is.
//
*/
echo '<h2>Test for versions and locations of ImageMagick</h2>';
echo '<b>Path: </b> convert<br>';


function alist ($array) {  //This function prints a text array as an html list.
$alist = "<ul>";
for ($i = 0; $i < sizeof($array); $i++) {
$alist .= "<li>$array[$i]";
}
$alist .= "</ul>";
return $alist;
}


exec("convert -version", $out, $rcode); //Try to get ImageMagick "convert" program version number.
echo "Version return code is $rcode <br>"; //Print the return code: 0 if OK, nonzero if error.
echo alist($out); //Print the output of "convert -version"
echo '<br>';
echo '<b>This should test for ImageMagick version 5.x</b><br>';
echo '<b>Path: </b> /usr/bin/convert<br>';


exec("/usr/bin/convert -version", $out, $rcode); //Try to get ImageMagick "convert" program version number.
echo "Version return code is $rcode <br>"; //Print the return code: 0 if OK, nonzero if error.
echo alist($out); //Print the output of "convert -version"


echo '<br>';
echo '<b>This should test for ImageMagick version 6.x</b><br>';
echo '<b>Path: </b> /usr/local/bin/convert<br>';


exec("/usr/local/bin/convert -version", $out, $rcode); //Try to get ImageMagick "convert" program version number.
echo "Version return code is $rcode <br>"; //Print the return code: 0 if OK, nonzero if error.
echo alist($out); //Print the output of "convert -version";


?>

EDIT: The info and script below only applies to iMagick class - which is not added by default with ImageMagick!!!

If I want to know if imagemagick is installed and actually working as a php extension, I paste this snippet into a web accessible file

<?php


error_reporting(E_ALL);
ini_set( 'display_errors','1');


/* Create a new imagick object */
$im = new Imagick();


/* Create new image. This will be used as fill pattern */
$im->newPseudoImage(50, 50, "gradient:red-black");


/* Create imagickdraw object */
$draw = new ImagickDraw();


/* Start a new pattern called "gradient" */
$draw->pushPattern('gradient', 0, 0, 50, 50);


/* Composite the gradient on the pattern */
$draw->composite(Imagick::COMPOSITE_OVER, 0, 0, 50, 50, $im);


/* Close the pattern */
$draw->popPattern();


/* Use the pattern called "gradient" as the fill */
$draw->setFillPatternURL('#gradient');


/* Set font size to 52 */
$draw->setFontSize(52);


/* Annotate some text */
$draw->annotation(20, 50, "Hello World!");


/* Create a new canvas object and a white image */
$canvas = new Imagick();
$canvas->newImage(350, 70, "white");


/* Draw the ImagickDraw on to the canvas */
$canvas->drawImage($draw);


/* 1px black border around the image */
$canvas->borderImage('black', 1, 1);


/* Set the format to PNG */
$canvas->setImageFormat('png');


/* Output the image */
header("Content-Type: image/png");
echo $canvas;
?>

You should see a hello world graphic:

In bash:

$ convert -version

or

$ /usr/local/bin/convert -version

No need to write any PHP file just to check.

If your ISP/hosting service has installed ImageMagick and put its location in the PATH environment variable, you can find what versions are installed and where using:

<?php
echo "<pre>";
system("type -a convert");
echo "</pre>";
?>

To test only the IMagick PHP extension (not the full ImageMagick suite), save the following as a PHP file (testImagick.php) and then run it from console: php testImagick.php

<?php
$image = new Imagick();
$image->newImage(1, 1, new ImagickPixel('#ffffff'));
$image->setImageFormat('png');
$pngData = $image->getImagesBlob();
echo strpos($pngData, "\x89PNG\r\n\x1a\n") === 0 ? 'Ok' : 'Failed';
echo "\n";

credit: https://mlocati.github.io/articles/php-windows-imagick.html

In Bash you can check if Imagick is an installed module:

$ php -m | grep imagick

If the response is blank it is not installed.

Remember that after installing Imagick (or indeed any PHP module) you need to restart your web server and/or php-fpm if you're using it, for the module to appear in phpinfo().